Windowsvista style: checkbox & radiobutton button does not resize when screen scaling is changed

If an application is using QWindowsVistaStyle the CheckBox and RadioButton buttons are never resized despite changes in screen scaling. At worst this results in buttons which are clipped because they are too large in size.

This problem does not occur with fusion or windows style.

Steps to reproduce:

1. Set screen scaling as high as possible
2. Run the attached project => the buttons are initially drawn correctly
3. Set screen scaling as low as possible => button size remains the same

Pass either -f or -w to the application to use fusion or windows style respectively to compare results when windowsvista style is not used.

Attached image demonstrates the change from 300% to 100% scaling.